Home / 1,161,128,931.83-1,602,306,236.73-678,365,629.03

Finding the Fourth Proportional to 1,161,128,931.83, 1,602,306,236.73 and 678,365,629.03

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Solution

The fourth proportional to 1,161,128,931.83, 1,602,306,236.73 and 678,365,629.03 is: 936,114,369.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161,128,931.83 : 1,602,306,236.73 = 678,365,629.03 : x
  2. Step 2: Convert to fraction form
    1,161,128,931.83/1,602,306,236.73 = 678,365,629.03/x
  3. Step 3: Cross multiply
    1,161,128,931.83x = 1,602,306,236.73 × 678,365,629.03
  4. Step 4: Simplify right side
    1,161,128,931.83x = 1,086,949,478,178,038,528
  5. Step 5: Solve for x
    x = 1,086,949,478,178,038,528/1,161,128,931.83
  6. Step 6: Final answer
    x = 936,114,369.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.